Randomly on my laptop screen this appears and debian just freezes. Sometimes these vertical lines don’t appear and system freezes anyway. Its just random. How do i identify if this is hardware or software issue? and then how to identify exact piece of hardware or software causing this problem.
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It’s not happening when you try to initiate sleep mode, is it? I have a computer that only ever does something like this when I try to use sleep. I’ve basically just stopped using that feature because nothing I tried ever fixed it. Works completely fine otherwise.
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